Answer:
3,247,695
Step-by-step explanation:
We want the coefficient of the term with x^8
So Use Newton's Binomial Expansion formula
Formula is (x + y) ^n = Sum for i=0 to n (n choose i) x^(n-i)*y^i
here (x^2 + 3) ^ 12
( 12 choose i) * (x^2)^(12-i) * (3)^i
i needs to equal 8 for us to get x^8
(12 choose 8) * (x^2)^(12-8) * (3^8)
= (12 choose 8) * x^8 * (3^8)
so a = (12 choose 8) * 
a = (12! /(8! * 4!) ) * 
a = ( 12*11*10*9/ 4*3*2*1) * 
a = (11*5*9) * 
a = 11*5*9 * 6561
a = 3,247,695
Answer:
58
Step-by-step explanation:
95 - 55 = 45
2600 / 45 = 57.77778.....
Because you can't sell 0.777778 of a bike you instead sell 58
I think the answer is 2/2
Answer:
60 hours
Step-by-step explanation:
$3,600 - $2,130 = $1,470 (how much he needs to make)
$1,470 divided by $24.50 = 60 hours
There are 8 triangles in this circle
An entire circle = 360 degrees
360/8=45
So I think the answer should be 45%